{"title":"4.26 Alexandrite","description":"","products":[{"product_id":"brazilian-alexandrite-ring-6-67-carats","title":"Brazilian Alexandrite Ring, 6.67 Carats","description":"The 6.67-carat Brazilian alexandrite at the center of this ring possesses the remarkable ability to change color. Unlike their Russian counterparts that change from green to red, those alexandrites that hail from the mines of Brazil display a stunning bluish-green hue under white light and change to a rich, deep purple when viewed under incandescent light. This brilliant-cut example is certified by the Gemological Institute of America as being a natural alexandrite of Brazilian origin. It is beautifully set in platinum with 2.21 total carats of diamonds. \u003cbr\u003e\u003cbr\u003e While the alexandrite was first discovered in the Ural Mountains of Russia in the 1800s, many of the finest examples of these stones have been found in Brazil. For example, the 17.08-carat stone known as the Whitney alexandrite can be found in the Smithsonian Museum of Natural History, having been gifted to the National Gem Collection by Carolyn Wright Whitney. Like the present stone, the Whitney alexandrite changes from bluish-green in daylight and fluorescent light to an intense purple in incandescent light. In terms of both rarity and originality, these Brazilian alexandrites outrank nearly every other gemstone known. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Cert_31-5280.pdf\" target=\"_blank\"\u003eDownload the Certification\u003c\/a\u003e \n","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":43231071010951,"sku":"31-5280","price":685000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/31-5280_1_3836810f-95ec-4e1a-a707-388b7ce2107a.png?v=1758656145"},{"product_id":"color-change-brazilian-alexandrite-ring-11-02-carats","title":"Color-Change Brazilian Alexandrite Ring, 11.02 Carats","description":"The 11.02-carat Brazilian alexandrite at the center of this ring possesses the remarkable ability to change color. Unlike their Russian counterparts that change from green to red, those alexandrites that hail from the mines of Brazil display a stunning blue-green hue under white light and change to a rich reddish-purple when viewed under incandescent light. This brilliant-cut example is certified by GemResearch Swisslabs, the American Gemological Laboratories and the Swiss Gemmological Institute as being a natural alexandrite of Brazilian origin with a prominent color change. It is beautifully set in platinum with 1.40 total carats of diamonds. \u003cbr\u003e\u003cbr\u003e While the alexandrite was first discovered in the Ural Mountains of Russia in the 1800s, many of the finest examples of these stones have been found in Brazil. For example, the 17.08-carat stone known as the Whitney alexandrite can be found in the Smithsonian Museum of Natural History, having been gifted to the National Gem Collection by Carolyn Wright Whitney. Like the present stone, the Whitney alexandrite changes from bluish-green in daylight and fluorescent light to an intense purple in incandescent light. In terms of both rarity and originality, these Brazilian alexandrites outrank nearly every other gemstone known. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Cert_31-5284.pdf\" target=\"_blank\"\u003eDownload the Certification\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":43672928419975,"sku":"31-5284","price":985000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/31-5284_1_a558bafb-c4fb-4b25-b3cd-ebe1170ba162.png?v=1767200182"},{"product_id":"color-change-russian-alexandrite-ring-1-31-carats","title":"Color Change Russian Alexandrite Ring, 1.31 Carats","description":"The 1.3-carat alexandrite set in this ring represents one of the rarest varieties of color-changing gemstones. The chameleon-like qualities of the stone stem from the complex way in which it absorbs certain types of light. Viewed in the daylight or under fluorescent light, the alexandrite displays a blue-green hue, while incandescent light changes its color to a rich burgundy. The phenomenon has led many to describe this rare gem as \"an emerald by day, a ruby by night.\" The remarkable alexandrite is accented by diamonds totaling 0.50 carats and set in platinum. \u003cbr\u003e\u003cbr\u003e Apart from its remarkable color-changing abilities, the alexandrite also enjoys an illustrious history. According to legend, it was discovered in 1834 on the day that the future Russian Tsar Alexander II came of age, and thus it was named \"Alexandrite\" in his honor. Because the stone's color shifts from green to red — the national colors of Imperial Russia — the alexandrite also became the country’s official gemstone. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Cert_31-5759.pdf\" target=\"_blank\"\u003eDownload the Certifications\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":43672938872967,"sku":"31-5759","price":78500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/31-5759_1.png?v=1767198673"},{"product_id":"brazilian-alexandrite-earrings-9-04-carats","title":"Brazilian Alexandrite Earrings, 9.04 Carats","description":"This remarkable pair of Brazilian alexandrite earrings showcases the spellbinding beauty of the coveted color-changing gems. Two beautiful alexandrites weighing 4.68 and 4.36 carats, respectively, are set in an elegant design amongst a profusion of diamonds totaling 6.12 carats. The alexandrites are accompanied by their AGL and the GIA reports, confirming each is completely untreated and displaying excellent and prominent color change, transforming from deep bluish green to reddish pink. Set in platinum. \u003cbr\u003e\u003cbr\u003e While the alexandrite was first discovered in the Ural Mountains of Russia in the 1800s, many of the finest examples of these stones have been found in Brazil. For example, the 17.08-carat stone known as the Whitney alexandrite can be found in the Smithsonian Museum of Natural History, having been gifted to the National Gem Collection by Carolyn Wright Whitney. Like the present gemstones, the Whitney alexandrite changes from bluish-green in daylight and fluorescent light to an intense purple in incandescent light. A fantastic rarity, the color change exhibited in alexandrites continues to mystify and delight all who encounter these gems. \u003cbr\u003e\u003cbr\u003e 1 1\/2\" length \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_31-7526.pdf\" target=\"_blank\"\u003eDownload the Reports\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":44451971924103,"sku":"31-7526","price":985000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/31-7526_1_e064e322-6bfb-42e5-8bfc-9441bb4864c2.png?v=1777555877"},{"product_id":"color-change-brazilian-alexandrite-ring-4-74-carats","title":"Color-Change Brazilian Alexandrite Ring, 4.74 Carats","description":"This incredible 4.74-carat untreated Brazilian alexandrite is a perfect example of the coveted color change phenomena. Unlike their Russian counterparts that change from green to red, alexandrites that hail from the mines of Brazil display a stunning bluish-green hue under white light and change to a rich, deep purple when viewed under incandescent light. This emerald cut example is also graded by the AGL as completely natural, undergoing no treatments to enhance its stunning phenomena. Beautifully set in platinum with two accent diamonds totaling 1.50 carats, this ring is a highly rare treasure. \u003cbr\u003e\u003cbr\u003e While the alexandrite was first discovered in the Ural Mountains of Russia in the 1800s, many of the finest examples of these stones have been found in Brazil. For example, the 17.08-carat stone known as the Whitney alexandrite can be found in the Smithsonian Museum of Natural History, having been gifted to the National Gem Collection by Carolyn Wright Whitney. Like this gemstone, the Whitney alexandrite changes from bluish-green in daylight and fluorescent light to an intense purple in incandescent light. In terms of both rarity and originality, Brazilian alexandrites are in a class all their own. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_32-0598.pdf\" target=\"_blank\"\u003eDownload the Report\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":44553399238791,"sku":"32-0598","price":600000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/32-0598_1.png?v=1780341721"},{"product_id":"cartier-color-change-ceylon-alexandrite-ring-6-29-carats-1","title":"Cartier Color-Change Ceylon Alexandrite Ring, 6.29 Carats","description":"This remarkable 6.29-carat untreated Ceylon alexandrite exemplifies the coveted color-change phenomenon in an exceptional setting by Cartier. The cushion cut gem displays a vivid green in natural light, shifting to a rich brownish pink under incandescent light. Graded by the AGL as completely natural and untreated, the phenomenal stone showcases its extraordinary properties without enhancement. The degree of color change is rated prominent to strong, with an impressive 80–90% shift, and a color-change quality graded excellent to very good. The alexandrite is accented by 1.75 carats of diamonds and set in 18K yellow gold by the renowned jeweler Carter. \u003cbr\u003e\u003cbr\u003e Though alexandrite was first discovered in Russia’s Ural Mountains in the 1800s, many of the finest examples have since been sourced from Sri Lanka. This Ceylon alexandrite is particularly rare and highly prized by collectors and designers alike for its exceptional clarity, intensity of color and unique optical properties. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_32-1044.pdf\" target=\"_blank\"\u003eDownload the Report\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":42639895593095,"sku":"32-1044","price":360000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/32-1044_1_6aa3a7eb-060e-4f72-a629-22d032a86933.png?v=1747063967"},{"product_id":"color-change-alexandrite-earrings-2-94-carats","title":"Color-Change Alexandrite Earrings, 2.94 Carats","description":"Few gemstones rival the rarity and mystique of Alexandrite, and this exceptional pair of drop earrings showcases two beautifully matched examples. The oval shaped step cut Alexandrites total 2.94 carats and each displays a dramatic and desirable color change—yellowish green to brown-pink, and bluish green to brownish purple—as confirmed by the accompanying GIA reports. These phenomenal stones are accented by round and hexagonal diamonds totaling 1.28 carats, which form a delicate drop. Set in platinum. \u003cbr\u003e\u003cbr\u003e Elegant in design and noble in origin, these earrings represent one of the world’s most valuable and storied gemstones. According to legend, Alexandrite was first discovered in Russia in 1834 on the birthday of Czar Alexander II. With red and green hues that mirrored the national colors of Imperial Russia, it became the official gemstone of the Russian crown and a favorite of the aristocracy. These remarkable earrings capture that royal legacy in every detail. \u003cbr\u003e\u003cbr\u003e 1 3\/8\" length \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_32-1330.pdf\" target=\"_blank\"\u003eDownload the Reports\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":43876112400519,"sku":"32-1330","price":88500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/32-1330_1.png?v=1772377235"},{"product_id":"color-change-ceylon-alexandrite-ring-7-94-carats","title":"Color-Change Ceylon Alexandrite Ring, 7.94 Carats","description":"Displaying the famed color-change phenomenon, the extraordinary 7.94-carat Ceylon alexandrite at the center of this ring shifts from a vivid brownish green in fluorescent light to a striking orangy brown in incandescent light. \u003cbr\u003e\u003cbr\u003e Graded by the AGL as entirely free from treatment and originating in the prestigious Ceylon region, the gemstone exemplifies the natural rarity of alexandrite. The oval gemstone is flanked by white diamonds totaling 1.20 carats and set in 18K yellow gold. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_32-1496.pdf\" target=\"_blank\"\u003eDownload the Report\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":43231220924551,"sku":"32-1496","price":165000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/32-1496_1_2f311202-5308-4116-b47b-418f281be5d3.png?v=1758656627"},{"product_id":"color-change-brazilian-alexandrite-ring-6-90-carats","title":"Color-Change Brazilian Alexandrite Ring, 6.90 Carats","description":"The 6.90-carat Brazilian alexandrite at the center of this ring is a true natural wonder. It displays the gemstone’s famed color-changing ability, which is uniquely found only in alexandrites from this prestigious location. Unlike Russian stones that shift from green to red, this Brazilian alexandrite transforms from a vivid bluish-green in daylight to a deep reddish-purple under incandescent light. This emerald cut example is graded by the American Gemological Laboratories and the Swiss Gemmological Institute as being untreated alexandrite of Brazilian origin with a prominent color change. It is beautifully set in platinum with 1.02 carats of diamonds. \u003cbr\u003e\u003cbr\u003e While the alexandrite was first discovered in the Ural Mountains of Russia in the 1800s, many of the finest examples of these stones have been found in The 17.08-carat stone known as the Whitney alexandrite can be found in the Smithsonian Museum of Natural History, having been gifted to the National Gem Collection by Carolyn Wright Whitney. Like the present stone, the Whitney alexandrite changes from bluish-green in daylight and fluorescent light to an intense purple in incandescent light. In terms of both rarity and originality, these Brazilian alexandrites outrank nearly every other gemstone known. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_31-5784.pdf\" target=\"_blank\"\u003eDownload the Reports\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":44195356541063,"sku":"31-5784","price":1050000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/31-5784_1.png?v=1774963760"},{"product_id":"kat-florence-color-change-alexandrite-ring-1-43-carats","title":"Kat Florence Color-Change Alexandrite Ring, 1.43 Carats","description":"This exquisite ring by Canadian designer Kat Florence centers a 1.43-carat oval Tanzanian alexandrite. Graded by the AGL, the untreated gemstone displays the rare color-change phenomenon, shifting from bluish-green in fluorescent light to pinkish-purple in incandescent light. \u003cbr\u003e\u003cbr\u003e The alexandrite is beautifully accented by flawless D-color diamonds totaling 0.71 carat—the highest grades of both color and clarity—further enhancing its brilliance. Set in 18K white gold, this ring exemplifies the exceptional craftsmanship and uncompromising standards that define Kat Florence’s designs. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_32-0795.pdf\" target=\"_blank\"\u003eDownload the Reports\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":43231147229319,"sku":"32-0795","price":75000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/32-0795_1.png?v=1758656328"},{"product_id":"brazilian-alexandrite-ring-1-24-carats","title":"Brazilian Alexandrite Ring, 1.24 Carats","description":"This elegant ring centers a stunning, untreated Brazilian alexandrite with remarkable depth of color. Weighing 1.24 carats, this rare gem is an exceptional example of the color-change phenomenon that makes alexandrite so coveted. Under white light, the hue is a vibrant bluish-green, which shifts to a deep purple when viewed under incandescent light. Certified by the AGL as completely free of heat treatment, this magnificent alexandrite is an incredible natural wonder. Complemented by 1.16 carats of diamonds and set in platinum. \u003cbr\u003e\u003cbr\u003e While the alexandrite was first discovered in the Ural Mountains of Russia in the 1800s, many of the finest examples of these stones have been found in Brazil. For example, the 17.08-carat stone known as the Whitney alexandrite can be found in the Smithsonian Museum of Natural History, gifted to the National Gem Collection by Carolyn Wright Whitney. Like this gemstone, the Whitney alexandrite changes from bluish-green in daylight and fluorescent light to an intense purple in incandescent light. In terms of both rarity and originality, Brazilian alexandrites are in a class all their own. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_32-2389.pdf\" target=\"_blank\"\u003eDownload the Report\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":44589535527047,"sku":"32-2389","price":44500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/32-2389_1.png?v=1778599273"},{"product_id":"alexandrite-ring-untreated-3-24-carats","title":"Alexandrite Ring, Untreated, 3.24 Carats","description":"This elegant ring centers an untreated alexandrite with a stunning depth of color. Weighing 3.24 carats, this remarkable gem is an exceptional example of the color-change phenomenon that makes alexandrite so coveted. Under white light, the hue is a vibrant bluish-green, which shifts to a deep purple when viewed under incandescent light. This rare gem is certified by the AGL as completely free of heat treatment, meaning its remarkable hue is entirely natural. The artful setting features an additional 1.33 carats of round white diamonds in a dramatic floral design. Set in 18K white gold. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_32-2396.pdf\" target=\"_blank\"\u003eDownload the Report\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":44719324364935,"sku":"32-2396","price":88500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/32-2396_1.png?v=1781191274"},{"product_id":"cats-eye-alexandrite-ring-4-16-carats","title":"Cat's Eye Alexandrite Ring, 4.16 Carats","description":"This extraordinary ring centers a 4.16-carat cat's-eye alexandrite, among the rarest and most coveted gemstones. Named for the luminous band of light that glides across its surface, resembling a feline pupil, the cat's-eye effect is an exceptionally uncommon phenomenon in alexandrite and requires both remarkable crystal structure and expert cutting to achieve. A specimen of this size is particularly noteworthy. \u003cbr\u003e\u003cbr\u003e Adding to its rarity, the alexandrite displays the gem's celebrated color-change effect, shifting from green in natural daylight to a warm brown-purple hue under incandescent light, as confirmed by its accompanying GIA report. Alexandrites exhibiting both a strong color change and a distinct cat's-eye effect are prized by collectors for their exceptional scarcity and beauty. \u003cbr\u003e\u003cbr\u003e The striking design is completed by a double halo surrounding the center stone, set with 1.37 carats of carefully matched alexandrites and 1.73 carats of white diamonds. Set in platinum, the ring showcases one of nature's most remarkable gemological treasures. \u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/library.rauantiques.com\/Report_32-2793.pdf\" target=\"_blank\"\u003eDownload the Report\u003c\/a\u003e","brand":"M.S. Rau","offers":[{"title":"Default Title","offer_id":44843838963847,"sku":"32-2793","price":98500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0083\/2471\/0466\/files\/32-2793_1.png?v=1781191388"}],"url":"https:\/\/rauantiques.com\/collections\/4-26-alexandrite.oembed","provider":"M.S. Rau","version":"1.0","type":"link"}